// defineLocal defines a variable at a function scope.
func (c *compiler) defineLocal(v *types.Var, lv *arch.LV) {
val := c.cg.Label()
lv.Addr = val
c.cg.Data()
intSize := c.cg.Int()
ptrSize := c.cg.Pointer()
size := 1
typ := v.Type().Underlying()
prim := primType(typ)
array, isArray := typ.(*types.Array)
isRecord := isRecord(typ, true)
if isArray {
size = int(array.Len())
}
init := 0
if x := v.Value(); x != nil {
init, _ = strconv.Atoi(x.String())
}
if !isArray && !isRecord {
c.cg.Lab(val)
}
switch {
case isRecord:
c.cg.BSS(c.cg.Labname(val), c.cg.Sizeof(typ), true)
case prim == types.Typ[types.Char]:
if isArray {
c.cg.BSS(c.cg.Labname(val), size, true)
} else {
c.cg.Defb(init)
c.cg.Align(1, intSize)
}
case prim == types.Typ[types.Int]:
if isArray {
c.cg.BSS(c.cg.Labname(val), size*intSize, true)
} else {
c.cg.Defw(init)
}
default:
if isArray {
c.cg.BSS(c.cg.Labname(val), size*ptrSize, true)
} else {
c.cg.Defp(init)
}
}
}
// defineGlobal defines a variable at the file scope level.
func (c *compiler) defineGlobal(v *types.Var) {
storage := v.Storage()
if storage != types.Public && storage != types.GlobalStatic {
return
}
c.cg.Data()
intSize := c.cg.Int()
ptrSize := c.cg.Pointer()
name := v.Name()
gname := c.cg.Gsym(name)
isStatic := storage == types.GlobalStatic
if storage == types.Public {
c.cg.Public(name)
}
typ := v.Type().Underlying()
prim := primType(typ)
array, isArray := typ.(*types.Array)
isRecord := isRecord(typ, true)
if !isArray && !isRecord {
c.cg.Name(name)
}
size := 1
if isArray {
size = int(array.Len())
}
val := 0
if x := v.Value(); x != nil {
val, _ = strconv.Atoi(x.String())
}
switch {
case isRecord:
c.cg.BSS(gname, c.cg.Sizeof(typ), isStatic)
case prim == types.Typ[types.Char]:
if isArray {
c.cg.BSS(gname, size, isStatic)
} else {
c.cg.Defb(val)
c.cg.Align(1, intSize)
}
case prim == types.Typ[types.Int]:
if isArray {
c.cg.BSS(gname, size*intSize, isStatic)
} else {
c.cg.Defw(val)
}
default:
if isArray {
c.cg.BSS(gname, size*ptrSize, isStatic)
} else {
c.cg.Defp(val)
}
}
}